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Taxes (Details 1)		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
China statutory income tax rate		25.00%	25.00%	25.00%
Preferential tax rate in China		(20.00%)	(20.00%)	(12.50%)
Tax rate difference outside China	[1]	(12.73%)	(16.75%)	(12.80%)
Change in valuation allowance		(8.33%)	(5.00%)	(13.50%)
Additional R&D deduction in China		0.00%	0.00%	(2.10%)
Permanent difference		25.51%	17.68%	23.40%
Effective tax rate		9.45%	(0.93%)	7.50%
[1] It is mainly due to the lower tax rate of the entities incorporated in Hong Kong, Singapore, and tax exempt in Cayman Islands.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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